Air-pump.



T. S. CAUSEY.

AIR PUMP.

APPLICATION FILED DEC. 6, 1913.

Patented July 20, 1915.

INVENTOR 627156 5/ BY 2. W

i ,4 TTOH/VEY w maaooe.

THOMAS S. CAUSEY, 01! DALLAS, TEXAS, ASSIGNOR TO ROBERT IB. KELLEY, 01? DALLAS,

' TEXAS.

maruinr.

Specification of Letters Patent. Patented July 241), 19115;.

Application filed December 6,1913. Serial No. 805,149.

citizen of the United States, residing at automobile.

Dallas, Texas, have invented certain new and useful Improvements in Air-Pumps, of which the following is a specification.

My invention relates to new and useful air pumps. a

Primarily the object of the invention is to provide an automobile tire pump that can be power driven from the motor of an More specifically the object is to provide a power pump of such mechanism that will be adapted to frictionally engage and be driven by the rear wheel of anautomobile.

Finally the object of the invention is to provide a device of the character described that will be strong, durable and eflicient,

.simple and comparatively inexpensive to construct, also one in which the several parts will not be liable to get out of working order.

With the above and other objects'in view, the invention has relation to certain novel features of construction and operation, an example of which is described in the specification and illustrated in the accompanying drawing, wherein:

Figure 1 is a side elevation showing the tire pump in positionto be driven by the automobile wheel. tion of the pump.

1 Similar reference characters refer to simi lar parts throughout the several views.

In the drawing the numeral 1 designates a pair of spool-shaped'driver members of such a size and shape as to receive and accommodate any standard automobile'tire. Said driver members are, adapted to ,frictionally engage the tire and transmit therefrom power vsuflicient to furnish a quick and convenient air pressurefor the automobile tires.

The spool members 1 are fixed upon the shafts 2' with countersunk screws 3, the shaft 2 being 'journaledin the bearings 4 which are integrallyv formed with the support brackets 5. The support brackets 5 are rigidly mounted upon a base plate 6. A.

pump cylinder 7 is rigidly mounted upon the center portion of the base 6. A piston rod 8, which carries the usual piston 9 Fig. 2 is an end elevaadapted to reciprocate in the cylinder, carries a cross arm 10 at its upper extremity. The upper extremity of the piston rod 9 is bifurcated and pivotally receives the cross arm 10 as shown at 11. The outer extremities of the shafts 2 carry rigidly fixed crank arms 12. The said crank arms carry. at their extremities the crank pins 14. A pair of connecting rods 15 of equal length, have their lower extremities journaled upon the crank pins 14. and their upper extremities pivotally attached to the outer ends of the cross arm 10 as designated by the numeral 16.

The usual rubber tube used in connecting the pump and tire is designated by the numeral 17. A pressure gage 18 of standard type willv preferably be used in connection with this pump and located near the end of the tube which will conveniently register the rising pressure in the tire.

In applying the pump to the rear wheel of an automobile, most of the weight of the car will preferably be supported by a jack,

which will allow a weight, suificientto cause support members, shafts journaled in the support members, spools fixed to the shafts,

crank arms carried by the shafts, a pump cylinder, a piston rod, a cross head pivoted on the piston rod and connecting rods correlated'with the crosshead and crank arms whereby the said pistonrod may be reciprocated by aforesaid shafts rotating in the same direction.

In testimony whereof, I aflix my signature in the presence of two witnesses.

THOMAS S. CAUSEY.

Witnesses:

A. C. CARR, J. C. LEDBETTER. 

